Matrix-CRDT

Use Matrix as a backend for local-first applications with the Matrix-CRDT Yjs provider.

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3Mentions

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785GitHub stars

REPOSITORY AT A GLANCE

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What it is

Use Matrix as a backend for local-first applications with the Matrix-CRDT Yjs provider.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

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Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2022-01-18 13:25:18 UTC to 2025-10-23 16:37:22 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	1	1	0
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	0	0	0
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	0	0	0
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	2	0	2

What Hacker News says

3 sources

sotomski·Oct 23, 2025

AFAIK, Automerge people work pretty hard on Beehive and Keyhive. Once released, that’ll be exactly what you asked for: https://www.inkandswitch.com/keyhive/notebook/05/ You can also use Yjs over Matrix (which has e2e encryption): https://github.com/YousefED/Matrix-CRDT

In CRDTs: Convergence without coordination

sotomski·Jan 9, 2025

Hey mate, it just so happens that I’m working on a very similar thing. Maybe I could help you out regarding security and local-first stuff? Drop me an email if you’re interested. Cheers. EDIT: In any case, you could take a look at https://github.com/YousefED/Matrix-CRDT. Matrix takes care of e2ee. CRDTs give you local-first super powers.

In Show HN: Kate's App

YousefED·Jan 18, 2022Submission

Show HN: Matrix-CRDT – real-time collaborative apps using Matrix as backend

Hi HN! Matrix-CRDT connects the worlds of Yjs [1] (a proven, high performance CRDT) with that of Matrix.org [2]. It started as an experiment, asking myself; can we store "state updates of a datastore" in Matrix instead of chat messages? Now, I'm convinced it's actually a really powerful combination to develop real-time, collaborative software. I'm using it for a new project and so far didn't have to write a backend yet. Matrix takes care of a lot of stuff: Authentication, E2EE, federation, hosting, etc. - so I can focus on the client. I love the ideas of Local First [3] software. Personally, I'm convinced the technologies in this ecosystem (CRDTs, etc) are really powerful and can do more to decentralize software than many web3 technologies that currently receive much of the hype. However, it's still early days, so I decided to open source

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parts that I think will be useful to others (I recently also shared SyncedStore [4]) [1] https://github.com/yjs/yjs [2] https://www.matrix.org [3] https://www.inkandswitch.com/local-first/ [4] https://www.syncedstore.org

320 points · Open discussion